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Nana76 [90]
3 years ago
5

What element forms an ion with an electronic configuration of [kr] and a –2 charge?

Chemistry
2 answers:
KonstantinChe [14]3 years ago
8 0
Must be Selenium (Se). It is two space away from Kr, which means that it needs two extra electron to be like a noble gas, Kr.
nekit [7.7K]3 years ago
6 0
Must be Selenium (Se). It is two space away from Kr, which means that it needs two extra electron to be like a noble gas, Kr.
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WILL GIVE YOU BRAINLIEST!!!
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Answer:

A ability to decompose

B reactivity

Explanation:

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Examples are flammability, rusting of iron, precipitation, decomposition of water by an electric current.

The ability to decompose and reactivity are chemical properties of a substance.

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5 0
3 years ago
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Explanation:

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2 years ago
How many moles are in 454 Liters of a gas?
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3 0
3 years ago
Which of the following statements best explains the observation that hydrogen fluoride has the highest boiling point of all the
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Answer:

c. HF can participate in hydrogen bonding.

Explanation:

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A particularly strong  type of intermolecular attraction is called the hydrogen bond, <em>which is a special type of dipole-dipole interaction between the hydrogen atom in a polar bond</em>, such as N-H, O-H, or F-H, and an electronegative O, N, or F atom.

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THIS IS SCIENCE
lana [24]
I'm guessing D or C, remember that the noble gases cannot combine
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